For the topping: Cream butter, brown sugar and cinnamon together.,Stir in pecans, raisins and chocolate pieces, and mix well then set aside.,For the cake: Cream shortening.,______,Add vanilla.,Beat in eggs, one at a time, beating well after each egg.,Sift together the flour, baking soda and baking powder.,Stir in flour mixture alternately with sour cream, beating well after each addition.,Place 1/2 of the batter mixture into a greased and lined (bottom) 10 inch tube pan.,Sprinkle with 1/2 of the topping mixture, then add second 1/2 of batter mixture and sprinkle the top evenly with the remaining topping.,Bake at 350 deg.,for 50 minutes until tester comes out clean.,Cool on a rack in the pan, and when cool invert onto a plate to serve.